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EOLIAN HARP.

No. 493,773. Patented Mar. 21, 1893.

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UNITED STATES PATENT OFFICE.

GILES J. HOLBROOK, OF JERSEY CITY, NEIV JERSEY.

AEO LIAN HARP.

SPECIFICATION forming part of Letters Patent No. 493,773, dated March21, 1893.

Application filed June 14, 1892- To all whom it may concern:

Be it known that I, GILES J. I-IOLBROOK, of Jersey City, county ofHudson, and State of New Jersey, have invented a new and usefulImprovement in zEolian Harps, of which the following is a specification.

The object of my improvement is to construct an aeolian harp in whicheach bridge is provided with a device (as a clamp) whereby it may besecured to a variety of structures in a variety of positions to suit theuser. As for example, as hereinafter described, the harp can beconstructed for operation by simply clamping the bridges to thewindow-sash and stretching the strings between them.

In the accompanying drawings, Figure 1 shows a window with my inventionapplied. Fig. 2 shows on a larger scale, the lower portion of the sashwith the harp applied in side View. Fig. 3 is an inverted plan view ofthe same.

a is the lower portion of the sash.

b and c are respectively, the string supports or bridges notched, asusual, at the edges.

dis a plate at right angles with the bridge I) and adapted to restagainst the bottom of the sash.

e is an ear extending from the plate d up on the one side of the sashand adapted to rest as one member of the clamp against the side of thesash.

fis an ear extending from the plate (1 up on the other side of the sashand provided with a screw-threaded hole to receive the screw the end ofwhich is adapted to bear against that side of the sash and constitutethe other member of the clamp.

Corresponding members are connected with the bridge 0 and are lettered,respectively, d, e,f' and g. With the clamp c are also connected thefollowing parts:

it is a member having an eye opposite the middle of the bridge 0.

t' and i are two plates clamped together by Serial No. 436,666. (Nomodel.)

thescrewsj so as to clamp between them the keys k, k, 0 R one for eachof the strings. By this arrangement of the keys between the plates 2'and z" held together by the clamping screws j, the proper amount offriction can be applied to the keys to maintain the tension although theparts be all of metal. The strings Z, Z, Z and Z are fastened to thebridge I) at one end and extend over the bridge 0, thence togetherthrough the eye of the member h and thence one passes and is secured toeach of the keys.

The parts I), (I, e andf may all be cast in one piece. The parts 0, d,e,f' and i may all be cast in one piece. The parts It and 1" may be castin one piece.

Although I have shown the bridges as clamped to the window-sash, I donot limit myself to such application of them since the construction isintended to enable the user to apply them in any manner which suits hisfancy and change them from one object to another as his fancy changes.

I claim- 1. As an article of manufacture, an zeolian harp bridgeprovided with a clamp adapted to secure it, substantially as described.

2. As an article of manufacture, an aeolian harp bridge provided with aclamp adapted to secure it and also provided with a key for each of thestrings, substantially as described.

3. In combination, the two bridges of an aeolian harp each provided witha clamping device adapted to secure the same to a window sash in aninverted position, substantially as described.

4. In combination, the bridge piece 0, the clamping device connectedtherewith, the key clamping plates 41 and t" and the keys held thereby,substantially as described.

G. J. HOLBROOK.

WVitnesses:

FRED L. KEMPER, J. E. GREER.

